It is currently 19 Feb 2018, 21:45

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# If y + 40x + 2 = 0, what is the value of xy?

Author Message
TAGS:

### Hide Tags

Intern
Joined: 06 Oct 2012
Posts: 7
If y + 40x + 2 = 0, what is the value of xy? [#permalink]

### Show Tags

06 Sep 2017, 08:26
00:00

Difficulty:

35% (medium)

Question Stats:

80% (01:10) correct 20% (00:55) wrong based on 30 sessions

### HideShow timer Statistics

If y + 40x + 2 = 0, what is the value of xy?

(1) 16x = –4y + 28

(2) 13y = 91 – 52x
[Reveal] Spoiler: OA

Last edited by Bunuel on 06 Sep 2017, 08:31, edited 2 times in total.
Intern
Joined: 06 Oct 2012
Posts: 7
Re: If y + 40x + 2 = 0, what is the value of xy? [#permalink]

### Show Tags

06 Sep 2017, 08:50
Since both the equations are simplified to form:

4x+y =7

How do we get xy in this case?
Manager
Joined: 18 Apr 2016
Posts: 67
Location: India
GMAT 1: 510 Q46 V17
WE: Web Development (Energy and Utilities)
Re: If y + 40x + 2 = 0, what is the value of xy? [#permalink]

### Show Tags

06 Sep 2017, 09:05
1. We have two equation. Sufficient to find x and y values

Eliminate BCE

2. We have two equation. Sufficient to find x and y values

Hence, its D

Sent from my KIW-L22 using GMAT Club Forum mobile app
_________________

-Yuvaraj
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Stop searching someone to motivate you.

Intern
Joined: 19 Sep 2016
Posts: 35
Re: If y + 40x + 2 = 0, what is the value of xy? [#permalink]

### Show Tags

06 Sep 2017, 09:47
Statement 1 - solving the two equations x=-1/4 & y=8 hence xy=-2
Statement 2 - since it the same line hence the values of x & y will be the same as from statement 1. Hence answer is D

Sent from my SM-N920G using GMAT Club Forum mobile app
Director
Joined: 04 Dec 2015
Posts: 696
Location: India
Concentration: Technology, Strategy
Schools: ISB '19, IIMA , IIMB, XLRI
WE: Information Technology (Consulting)
Re: If y + 40x + 2 = 0, what is the value of xy? [#permalink]

### Show Tags

07 Sep 2017, 06:08
dheerajkaushik90 wrote:
If y + 40x + 2 = 0, what is the value of xy?

(1) 16x = –4y + 28

(2) 13y = 91 – 52x

$$y + 40x + 2 = 0$$ --------- (i)

(1) $$16x = –4y + 28$$

$$4x = -y + 7$$

$$y + 4x = 7$$ -------- (ii)

Subtracting (i) and (ii) we can find the value of $$x$$ and $$y$$. Hence we can find the value of $$xy$$.

Hence I is Sufficient.

(2) $$13y = 91 – 52x$$

$$y = 7 - 4x$$

$$y + 4x = 7$$ ---------- (iii)

Subtracting (i) and (iii) we can find the value of $$x$$ and $$y$$. Hence we can find the value of $$xy$$.

Hence II is Sufficient.

Intern
Joined: 19 Sep 2016
Posts: 35
Re: If y + 40x + 2 = 0, what is the value of xy? [#permalink]

### Show Tags

07 Sep 2017, 07:21
What is the OA for the question

Sent from my SM-N920G using GMAT Club Forum mobile app
Re: If y + 40x + 2 = 0, what is the value of xy?   [#permalink] 07 Sep 2017, 07:21
Display posts from previous: Sort by